# Centrifugal casting

> Centrifugal casting throws molten metal into the mold with the force of a spinning arm; it is the usual way to cast lost-wax jewelry.

- Source: https://www.711grados.com/en/centrifugal-casting/
- Language: en
- Note: This entry was drafted with the help of AI and is pending review by the author.
- Published: 2026-06-30
- Updated: 2026-07-12
- Translation (es): https://www.711grados.com/es/fundicion-centrifuga/
- Author: Sandra Sánchez
- Site: 711 Grados (https://www.711grados.com/)

---

In centrifugal casting, molten metal is driven into the mold by the centrifugal force of an arm spinning at high speed. It is used with the lost-wax process.

![Steps of the technique: Prepare the flask, Load the metal, Melt, Release the arm, Cool, Clean](https://www.711grados.com/media/diagrams/centrifuga-steps.en.svg "Summary of the steps")

## How it works

1. The flask with the heated mold is placed on the arm.
2. The metal is melted in a crucible beside the mold.
3. When the arm is released (spring-driven or electric), it spins and the force pushes the liquid metal into the mold.
4. It is left to cool, the investment is broken away and the piece cleaned.

## Advantages

It is quick, reliable and reproduces detail very well; many pieces can be cast at once on a tree.

## Control

Metal and mold temperature, waiting time and spin speed determine the result. With too little metal or a cold mold, the piece can come out incomplete.

## Safety

The machine sits in a protected chamber, and glasses, gloves and [protective equipment](https://www.711grados.com/en/casting-protective-equipment/) are used.

## Step by step

1. **Prepare the flask.** Burn out the wax and keep the mold at temperature.
2. **Load the metal.** Put the metal in the crucible.
3. **Melt.** With the torch until the metal “dances”.
4. **Release the arm.** Centrifugal force pushes the metal into the mold.
5. **Cool.** Let it rest and quench in water.
6. **Clean.** Remove the investment and cut the sprues.

## Tools and materials

- Centrifugal arm machine
- Flask and refractory investment ([molds](https://www.711grados.com/en/casting-molds/))
- [Crucible](https://www.711grados.com/en/casting-crucibles/) and [torch](https://www.711grados.com/en/jewelers-torches/)
- [Protective equipment](https://www.711grados.com/en/casting-protective-equipment/)

## Common mistakes

- Metal not fully melted: the piece comes out incomplete.
- Badly dried mold: the metal splashes.
- Not winding the arm: it does not spin with force.
- Neglecting protection: there are splashes.

## See also

- [Lost-wax casting](https://www.711grados.com/en/lost-wax-casting/)
- [Vacuum casting](https://www.711grados.com/en/vacuum-casting/)
- [Casting molds: investment, rubber, silicone and sand](https://www.711grados.com/en/casting-molds/)
- [Jewelry oven](https://www.711grados.com/en/jewelry-oven/)